21032310110 has 64 divisors (see below), whose sum is σ = 45599500800. Its totient is φ = 6823170432.

The previous prime is 21032310097. The next prime is 21032310119. The reversal of 21032310110 is 1101323012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032310119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1125221 + ... + 1143759.

It is an arithmetic number, because the mean of its divisors is an integer number (712492200).

Almost surely, 2^21032310110 is an apocalyptic number.

21032310110 is an abundant number, since it is smaller than the sum of its proper divisors (24567190690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21032310110 is a wasteful number, since it uses less digits than its factorization.

21032310110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19425.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21032310110 its reverse (1101323012), we get a palindrome (22133633122).

The spelling of 21032310110 in words is "twenty-one billion, thirty-two million, three hundred ten thousand, one hundred ten".